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Add mkstemp(3).

This commit is contained in:
Jonas 'Sortie' Termansen 2013-09-18 20:07:30 +02:00
parent f105c8f3be
commit fd4b35f986
3 changed files with 43 additions and 1 deletions
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1
libc/Makefile
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@ -305,6 +305,7 @@ stdlib/canonicalize_file_name.o \
stdlib/env.o \
stdlib/_Exit.o \
stdlib/exit.o \
stdlib/mkstemp.o \
stdlib/mktemp.o \
stdlib/on_exit.o \
stdlib/rand.o \

2
libc/include/stdlib.h
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@ -84,6 +84,7 @@ void* malloc(size_t);
int mblen(const char*, size_t);
size_t mbstowcs(wchar_t* __restrict, const char* __restrict, size_t);
int mbtowc(wchar_t *__restrict, const char* __restrict, size_t);
int mkstemp(char*);
#if !defined(_SORTIX_SOURCE)
char* mktemp(char* templ);
#endif
@ -137,7 +138,6 @@ char* l64a(long);
void lcong48(unsigned short [7]);
long lrand48(void);
char* mkdtemp(char*);
int mkstemp(char*);
long mrand48(void);
long nrand48(unsigned short[3]);
int posix_memalign(void**, size_t, size_t);

41
libc/stdlib/mkstemp.cpp Normal file
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@ -0,0 +1,41 @@
/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2013.
This file is part of the Sortix C Library.
The Sortix C Library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at your
option) any later version.
The Sortix C Library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
stdlib/mkstemp.cpp
Make a unique temporary filepath and opens it.
*******************************************************************************/
#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
extern "C" int mkstemp(char* templ)
{
int fd;
do
{
size_t templ_len = strlen(templ);
for ( size_t i = templ_len - 6UL; i < templ_len; i++ )
templ[i] = '0' + rand() % 10;
} while ( (fd = open(templ, O_RDWR | O_EXCL | O_CREAT, 0666)) < 0 &&
(errno == EEXIST) );
return fd;
}